CN1462720A - Method for preparing nano tube of some metalloid oxides and metals with size and shape being controllable - Google Patents
Method for preparing nano tube of some metalloid oxides and metals with size and shape being controllable Download PDFInfo
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- CN1462720A CN1462720A CN 03127069 CN03127069A CN1462720A CN 1462720 A CN1462720 A CN 1462720A CN 03127069 CN03127069 CN 03127069 CN 03127069 A CN03127069 A CN 03127069A CN 1462720 A CN1462720 A CN 1462720A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
- C01B13/14—Methods for preparing oxides or hydroxides in general
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- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
- C30B29/60—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape characterised by shape
- C30B29/605—Products containing multiple oriented crystallites, e.g. columnar crystallites
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- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B7/00—Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/10—Particle morphology extending in one dimension, e.g. needle-like
- C01P2004/13—Nanotubes
Abstract
A process for preparing the size and shape controllable ampholytic metal oxides and their metallic nanotubes features that based on the principle that under existance of excessive alkali the ampholytic metal hydroxide can become coordinate anions, under the action of surfactant as "soft template", the ampholytic metal oxide and its metallic nanotubes can be prepared by direct hydrothermal reaction or redox reaction (for example, ZnO, CuO, Al2O3, PbO2, SnO2 and relative metals). Its advantages are simple process, controllable sizes of nanotube, uniform wall thickness, and high output.
Description
Technical field
The invention belongs to preparation of nanomaterials.
Background technology
Since finding carbon nanotube from Japanese scientist Iijima in 1991, one dimension Nano structure, comprise nano wire, nanometer rod, nanotube, nano belt, nanofiber etc., caused lot of domestic and foreign chemistry, physics and Materials science worker's thereof very big interest, this is because monodimension nanometer material presents physics and the chemical property and the wide application prospect of the uniqueness mutually different with they bodies.In in the past 10 years, for the core nanotube has been subjected to widely paying close attention to, preparation method's the exploitation of nanotube and the research of character are devoted in most work with the CNT (carbon nano-tube).In recent years, research around nanotube has obtained breakthrough progress, successfully prepared diameter 0.4nm to many nano structural materials (Angew.Chem.Int.Ed.2002 such as the Single Walled Carbon Nanotube of several nanometers and multi-walled carbon nano-tubes, carbide, metal, oxide compound, sulfide, nitride, organic polymers, 41,3451; J.Am.Chem.Soc.2003,125,3440).At present, the preparation method of nanotube summarizes and mainly contains two big classes: physical method and chemical process.Physical method comprises: laser ablation method, arc discharge method, vapour deposition process, electronics or ion beam evaporation method etc.Chemical process is normally by means of chemical reaction nano materials under specific reaction conditions.The characteristics of physical method are the technical qualification more complicated, and unit is required than higher, and productive rate is low, therefore are not suitable for scale operation, but the product quality height that obtains.Chemical process is the important method of preparation monodimension nanometer material, and its principal feature is that operational condition nanometer material structure relatively gentleer, that obtain is even, is not easy to produce defective, easily the size of nano material is regulated and control, and is fit to scale operation.At present actually rare with the report of the 1-dimention nano pipe of synthetic amphoteric metal oxide compound of chemical process and metal thereof, and use the very little especially of wet chemical method purely.Therefore, develop mild condition, nano-scale is adjustable, the liquid-phase synthesis process of flawless some amphoteric metal oxide compound and metal nano-tube thereof is an aim of the present invention.The present invention utilizes some amphoteric metal oxyhydroxide can form the character of coordination anion at alkaline condition, selecting suitable tensio-active agent is template, adopt hydro-thermal and conventional method, simultaneously by some oxygenant, perhaps reductive agent, obtain size and pattern controlled some amphoteric metal oxide compound and metal nano-tube thereof, realized re-set target.This method is not seen pertinent literature or patent report at present as yet in the field that this institute relates to.
Summary of the invention
The objective of the invention is to develop some the controlled amphoteric metal oxide compound of a kind of size and pattern and the preparation method of metal nano-tube thereof.This type of material has wide application prospect at numerous areas such as microtronics, nano-device and other functional materialss.The present invention with other methods involving relatively, have simple to operate, production cost is low, product and size thereof and pattern characteristics such as control easily.
The present invention relates to the preparation method of some amphoteric metal oxide compound and metal nano-tube thereof.The general formula of amphoteric metal oxide compound can be write as M
xO
y(wherein, M represents metal, M=Zn, Hg, Cd, Al, Ga, In, Pb, Cu, Sn, Cr etc.).The preparation of these oxide nanos is to adopt technology conventional and that hydro-thermal combines.Directly carry out hydro-thermal reaction, perhaps utilize the simple oxidation reduction reaction, just can obtain the purpose product, the pattern of nanotube be by means of soft template be used for realize.Oxygenant is as (NH
4)
2S
2O
8, KMnO
4, NaClO, K
2Cr
2O
7Deng, reductive agent such as glucose, hydrazine hydrate N2H4 H2O-100 and some active metals etc.The soft template of selecting is the tensio-active agent of various structure types, as: long-chain vitriol C
nH
2n+1OSO
3Na (n=12,14,16), long-chain phosphoric acid salt C
nH
2n+1OPO
3H
2(n=12,14,16), primary amine C
nH
2n+1NH
2(n=12,16,18), quaternary cationics C
16TMABr (hexadecyl trimethyl ammonium bromide, TMA=trimethylammonium), AOT (AOT=[2 one ethylhexyl] sodium sulfosuccinate), AEO-9 (AEO-9=polyester fat polyoxyethylenated alcohol), PEG (PEG=polyoxyethylene glycol) etc.; Can be a kind of in them, also can be two kinds and mix and use.
Nitrate with a certain amount of above-mentioned metal (M) under the room temperature is dissolved in (the mole proportioning is 1: 300) in the quantitative deionized water, then, (volume ratio of above-mentioned nitrate solution and basic solution is 1: 20-30) this solution dropwise to be added in the basic solution of 1-3M (concentration of basic solution depends on selected metal), after fully stirring, add certain amount of surfactant (the mole proportioning of tensio-active agent and metal nitrate is 3: 1), in 30-70 ℃ of temperature range, fully stir and dissolve fully until tensio-active agent, obtain the solution of clear, in this solution, add quantitative oxidation (reduction) agent then, fully stir and obtain homogeneous phase solution, range of reaction temperature is 30-80 ℃, and the reaction times is 1-5 hour.For different metals, or the above-mentioned homogeneous phase solution that obtains put into the stainless steel autoclave of teflon lined, baking oven is put in sealing, range of reaction temperature is 100-200 ℃, reaction times is 5-8 hour, and after reaction finished, centrifugation went out precipitation, with dehydrated alcohol and deionized water repetitive scrubbing, tensio-active agent and other mineral ion are thoroughly removed, and then centrifugation goes out precipitation, under the room temperature vacuum condition, be drying to obtain the purpose product.
With the amphoteric metal oxide compound of method for preparing or the nanotube of metal, diameter and wall thickness are even, and the external diameter scope is 5-10nm, and internal diameter is 3-8nm, and length can reach the hundreds of nanometer.The product productive rate that this method obtains generally can reach 60%-95% (in corresponding metal).This shows, present technique reaction conditions gentleness, simple to operate, to the may command of amphoteric metal oxide compound and metal nano-tube thereof the general applicability of having got everything ready, be a kind of high yield, easy realization of industrialization simply, preparation method cheaply.
Embodiment
The preparation of Cu nanotube: under the room temperature with 1mmol CuCl
2H
2O is dissolved in the 5ml deionized water, then, this solution slowly is added drop-wise in 130ml NaOH (3M) solution, fully stirs, and adds 3mmol C subsequently
16TMABr (hexadecyl trimethyl ammonium bromide is condensed to CTAB) dissolves until tensio-active agent fully 40-50 ℃ of abundant down the stirring, obtains clear solution, adds 1ml hydrazine hydrate (N in this solution
2H
4) solution, the homogeneous phase solution that stirring obtains further reacted 3-7 hour down at 20-70 ℃, obtain bolarious precipitation, the centrifugation product, with dehydrated alcohol and deionized water repetitive scrubbing 5-8 time, tensio-active agent and other mineral ion are thoroughly removed, and then centrifugation go out precipitation, got product C u nanotube in dry 4-5 hour under the room temperature vacuum condition, productive rate is 95% (in Cu).
Cu
2The preparation of O nanotube: add 5ml glucose solution (0.1M) in the clear solution that after above-mentioned adding Surfactant CTAB, obtains, the homogeneous phase solution that stirring obtains further reacted 1-3 hour down at 20-50 ℃, after reaction finishes, obtain cherry precipitation, the centrifugation product is used dehydrated alcohol and deionized water repetitive scrubbing 5-8 time, and tensio-active agent and other mineral ion are thoroughly removed, and then centrifugation goes out precipitation, under the room temperature vacuum condition dry 4-5 hour product C u
2O nanotube, productive rate are 90% (in Cu).
The preparation of CuO nanotube: the clear solution that obtains behind the above-mentioned adding tensio-active agent is directly joined in the stainless steel autoclave of teflon lined of 150ml, baking oven is put in sealing then, temperature is controlled at 120-160 ℃, react after 3-5 hour, naturally cool to room temperature, centrifugation goes out black precipitate, gets product C uO nanotube in vacuum-drying 5-8 hour under the room temperature, and productive rate is 88% (in Cu).
Cu, Cu
2O, the composition of CuO nanotube and structure are pure phase by powder x-ray diffraction (XRD) evidence, pure existence.Their composition proves that further by the energy dispersive X-ray spectral characterization they all are to form by the stoichiometric ratio of expection.Their nanostructure pattern obtains proof by scanning electron microscope (SEM), transmission electron microscope (TEM), electron diffraction and high-resolution-ration transmission electric-lens means such as (HRTEM): the external diameter of pipe is 5-10nm, and internal diameter is 3-8nm, and length can reach the hundreds of nanometer.
Other amphoteric metal oxide compound and the metal nano-tube thereof for preparing have specific dimensions (external diameter of pipe is 5-10nm, and internal diameter is 3-8nm) and pattern be can control with above-mentioned similar approach, for example, ZnO, HgO, CdO, Al under conditions of similarity, also successfully obtained
2O
3, Ga
2O
3, In
2O
3, PbO, Pb
3O
4, Pb
2O
3, PbO
2, SnO
2, Cr
2O
3Nano tube structure Deng amphoteric metal oxide compound and respective metal thereof.
Claims (4)
1. controlled some the amphoteric metal oxide compound of size and pattern and the preparation method of metal nano-tube thereof, it is characterized in that adopting technology conventional and that hydro-thermal combines, directly carry out hydro-thermal reaction, perhaps utilize the simple oxidation reduction reaction, just can obtain the purpose product, the pattern of nanotube be by means of soft template be used for realize, under the room temperature with a certain amount of metal (as Zn, Hg, Cd, Al, Ga, In, Pb, Cu, Sn, Cr) nitrate is dissolved in the quantitative deionized water, its mole proportioning is 1: 300, then, this solution is added dropwise (concentration of basic solution depends on selected metal in the basic solution of 1-3M, the volume ratio of nitrate solution and basic solution is 1: 20-30), after fully stirring, add certain amount of surfactant (the mole proportioning of tensio-active agent and metal nitrate is 3: 1), in 30-70 ℃ of temperature range, fully stir and dissolve fully until tensio-active agent, obtain the solution of clear, in this solution, add quantitative oxygenant or reductive agent then, fully stir and obtain homogeneous phase solution, range of reaction temperature is 30-80 ℃, reaction times is 1-5 hour, or the above-mentioned homogeneous phase solution that obtains is put into the stainless steel autoclave of teflon lined, sealing, put into baking oven, range of reaction temperature is 100-200 ℃, reaction times is 5-8 hour, after reaction finishes, centrifugation goes out precipitation, with dehydrated alcohol and deionized water repetitive scrubbing, tensio-active agent and other mineral ion are thoroughly removed, and then centrifugation goes out precipitation, be drying to obtain the purpose product under the room temperature vacuum condition, the soft template of selection is the tensio-active agent of various structure types, as: long-chain vitriol C
nH
2n+1OSO
3Na (n=12,14,16), long-chain phosphoric acid salt C
nH
2n+1OPO
3H
2(n=12,14,16), primary amine C
nH
2n+1NH
2(n=12,16,18), quaternary cationics C
16TMABr (hexadecyl trimethyl ammonium bromide, the TMA=trimethylammonium), AOT (AOT=[2 one ethylhexyl] sodium sulfosuccinate), AEO-9 (AEO-9=polyester fat polyoxyethylenated alcohol), PEG (PEG=polyoxyethylene glycol) etc., can be a kind of in them, also can be two kinds and mix and use.
2. according to the preparation method of described amphoteric metal oxide compound of claim 1 and metal nano-tube thereof, it is characterized in that under the room temperature 1mmol CuCl
2H
2O is dissolved in the 5ml deionized water, then, this solution slowly is added drop-wise in 130ml NaOH (3M) solution, fully stirs, and adds 3mmol C subsequently
16TMABr (hexadecyl trimethyl ammonium bromide is condensed to CTAB) dissolves until tensio-active agent fully 40-50 ℃ of abundant down the stirring, obtains clear solution, adds 1ml hydrazine hydrate (N in this solution
2H
4) solution, the homogeneous phase solution that stirring obtains further reacted 3-7 hour down at 20-70 ℃, obtain bolarious precipitation, the centrifugation product, with dehydrated alcohol and deionized water repetitive scrubbing 5-8 time, tensio-active agent and other mineral ion are thoroughly removed, and then centrifugation go out precipitation, getting product C u nanotube in dry 4-5 hour under the room temperature vacuum condition, is 95% in the Cu productive rate.
3. according to the preparation method of described amphoteric metal oxide compound of claim 1 and metal nano-tube thereof, it is characterized in that under the room temperature 1mmol CuCl
2H
2O is dissolved in the 5ml deionized water, then, this solution slowly is added drop-wise in 130ml NaOH (3M) solution, fully stirs, and adds 3mmol C subsequently
16TMABr (hexadecyl trimethyl ammonium bromide, be condensed to CTAB), dissolve fully until tensio-active agent 40-50 ℃ of abundant down the stirring, obtain clear solution, in this solution, add 5ml glucose solution (0.1M), the homogeneous phase solution that stirring obtains further reacted 1-3 hour down at 20-50 ℃, after reaction finishes, obtain cherry precipitation, the centrifugation product is used dehydrated alcohol and deionized water repetitive scrubbing 5-8 time, and tensio-active agent and other mineral ion are thoroughly removed, and then centrifugation goes out precipitation, under the room temperature vacuum condition dry 4-5 hour product C u
2The O nanotube is 90% in the Cu productive rate.
4. according to the preparation method of described amphoteric metal oxide compound of claim 1 and metal nano-tube thereof, it is characterized in that under the room temperature 1mmol CuCl
2H
2O is dissolved in the 5ml deionized water, then, this solution slowly is added drop-wise in 130ml NaOH (3M) solution, fully stirs, and adds 3mmol C subsequently
16TMABr (hexadecyl trimethyl ammonium bromide, be condensed to CTAB), dissolve fully until tensio-active agent 40-50 ℃ of abundant down the stirring, obtain clear solution, this solution is directly joined in the stainless steel autoclave of teflon lined of 150ml, baking oven is put in sealing then, and temperature is controlled at 120-160 ℃, reacts after 3-5 hour, naturally cool to room temperature, centrifugation goes out black precipitate, gets product C uO nanotube in vacuum-drying 5-8 hour under the room temperature, is 88% in the Cu productive rate.
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CN100366793C (en) * | 2005-06-13 | 2008-02-06 | 中国科学院理化技术研究所 | Method and equipment for preparing single-crystal doped Nano zinc oxide tube through gaseous phase deposition |
CN100402432C (en) * | 2006-03-03 | 2008-07-16 | 中山大学 | Localized growth method of nanowire array of copper oxide |
CN100427247C (en) * | 2006-01-17 | 2008-10-22 | 电子科技大学 | Method for preparing copper powder |
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CN114604890A (en) * | 2021-12-30 | 2022-06-10 | 南京大学扬州化学化工研究院 | Preparation method of copper hydroxide nanotube and copper oxide nanotube |
CN116273001A (en) * | 2022-11-25 | 2023-06-23 | 中国科学院新疆理化技术研究所 | Cu-CuO/Co (OH) for catalytic reduction of 4-nitrophenol 2 Preparation method and application of (C) |
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